Anal Leakage before diagnosis?

Hello,
I have a very disgusting problem and need some help. I would first like to know if anyone here has dealt with anal leakage before diagnosis. For example, leaking fluid or watery feces (like you haven't wiped well) hours after a bowel movement. I have had this for a few years now and have not been diagnosed with colon cancer.
i assumed this problem was hemmroids (which i do have) and I'm writing today because last night, HOURS AFTER a bowel movement, I had leaked feces with a little bit of blood. This has never happened before and naturally i'm pretty worried.
Any help will be apprecited.
I didn't find the right solution from the Internet.
References:
http://coloncancersupport.colonclub.com/viewtopic.php?t=11087
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Thank you.